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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.4 by jsr166, Sun Feb 10 21:18:25 2013 UTC vs.
Revision 1.56 by jsr166, Mon Jun 2 22:20:32 2014 UTC

# Line 7 | Line 7
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 27 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44      void checkIncomplete(CompletableFuture<?> f) {
45          assertFalse(f.isDone());
46          assertFalse(f.isCancelled());
# Line 42 | Line 56 | public class CompletableFutureTest exten
56          catch (Throwable fail) { threadUnexpectedException(fail); }
57      }
58  
59 <    void checkCompletedNormally(CompletableFuture<?> f, Object value) {
59 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 >        try {
61 >            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 >        try {
64 >            assertEquals(value, f.join());
65 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 >        try {
67 >            assertEquals(value, f.getNow(null));
68 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 >        try {
70 >            assertEquals(value, f.get());
71 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
72          assertTrue(f.isDone());
73          assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75          assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86 +            f.join();
87 +            shouldThrow();
88 +        } catch (CompletionException success) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128          try {
129 <            assertSame(value, f.join());
129 >            f.get();
130 >            shouldThrow();
131 >        } catch (ExecutionException success) {
132 >            assertSame(ex, success.getCause());
133          } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140          try {
141 <            assertSame(value, f.getNow(null));
141 >            f.get(LONG_DELAY_MS, MILLISECONDS);
142 >            shouldThrow();
143 >        } catch (CancellationException success) {
144          } catch (Throwable fail) { threadUnexpectedException(fail); }
145          try {
146 <            assertSame(value, f.get());
146 >            f.join();
147 >            shouldThrow();
148 >        } catch (CancellationException success) {}
149 >        try {
150 >            f.getNow(null);
151 >            shouldThrow();
152 >        } catch (CancellationException success) {}
153 >        try {
154 >            f.get();
155 >            shouldThrow();
156 >        } catch (CancellationException success) {
157          } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165          try {
166 <            assertSame(value, f.get(0L, SECONDS));
166 >            f.get(LONG_DELAY_MS, MILLISECONDS);
167 >            shouldThrow();
168 >        } catch (ExecutionException success) {
169 >            assertTrue(success.getCause() instanceof CancellationException);
170          } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172 +            f.join();
173 +            shouldThrow();
174 +        } catch (CompletionException success) {
175 +            assertTrue(success.getCause() instanceof CancellationException);
176 +        }
177 +        try {
178 +            f.getNow(null);
179 +            shouldThrow();
180 +        } catch (CompletionException success) {
181 +            assertTrue(success.getCause() instanceof CancellationException);
182 +        }
183 +        try {
184 +            f.get();
185 +            shouldThrow();
186 +        } catch (ExecutionException success) {
187 +            assertTrue(success.getCause() instanceof CancellationException);
188 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193      }
194  
195 <    // XXXX Just a skeleton implementation for now.
196 <    public void testTODO() {
197 <        fail("Please add some real tests!");
195 >    /**
196 >     * A newly constructed CompletableFuture is incomplete, as indicated
197 >     * by methods isDone, isCancelled, and getNow
198 >     */
199 >    public void testConstructor() {
200 >        CompletableFuture<Integer> f = new CompletableFuture<>();
201 >        checkIncomplete(f);
202 >    }
203 >
204 >    /**
205 >     * complete completes normally, as indicated by methods isDone,
206 >     * isCancelled, join, get, and getNow
207 >     */
208 >    public void testComplete() {
209 >        CompletableFuture<Integer> f = new CompletableFuture<>();
210 >        checkIncomplete(f);
211 >        f.complete(one);
212 >        checkCompletedNormally(f, one);
213      }
214  
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258 +    }
259 +
260 +    /**
261 +     * obtrudeException forces completion with given exception
262 +     */
263 +    public void testObtrudeException() {
264 +        CompletableFuture<Integer> f = new CompletableFuture<>();
265 +        checkIncomplete(f);
266 +        f.complete(one);
267 +        checkCompletedNormally(f, one);
268 +        f.obtrudeException(new CFException());
269 +        checkCompletedWithWrappedCFException(f);
270 +        f = new CompletableFuture<>();
271 +        f.obtrudeException(new CFException());
272 +        checkCompletedWithWrappedCFException(f);
273 +        f = new CompletableFuture<>();
274 +        f.completeExceptionally(new CFException());
275 +        f.obtrudeValue(four);
276 +        checkCompletedNormally(f, four);
277 +        f.obtrudeException(new CFException());
278 +        checkCompletedWithWrappedCFException(f);
279 +    }
280 +
281 +    /**
282 +     * getNumberOfDependents returns number of dependent tasks
283 +     */
284 +    public void testGetNumberOfDependents() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        assertEquals(0, f.getNumberOfDependents());
287 +        CompletableFuture g = f.thenRun(new Noop(ExecutionMode.DEFAULT));
288 +        assertEquals(1, f.getNumberOfDependents());
289 +        assertEquals(0, g.getNumberOfDependents());
290 +        CompletableFuture h = f.thenRun(new Noop(ExecutionMode.DEFAULT));
291 +        assertEquals(2, f.getNumberOfDependents());
292 +        f.complete(1);
293 +        checkCompletedNormally(g, null);
294 +        assertEquals(0, f.getNumberOfDependents());
295 +        assertEquals(0, g.getNumberOfDependents());
296 +    }
297 +
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303  
# Line 80 | Line 313 | public class CompletableFutureTest exten
313      }
314  
315      /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final Supplier<Integer> supplyOne =
338 +        () -> Integer.valueOf(1);
339 +    static final Function<Integer, Integer> inc =
340 +        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 +    static final BiFunction<Integer, Integer, Integer> subtract =
342 +        (Integer x, Integer y) -> subtract(x, y);
343 +    static final class IncAction implements Consumer<Integer> {
344 +        int invocationCount = 0;
345 +        Integer value;
346 +        public void accept(Integer x) {
347 +            invocationCount++;
348 +            value = inc(x);
349 +        }
350 +    }
351 +    static final class IncFunction implements Function<Integer,Integer> {
352 +        final ExecutionMode m;
353 +        int invocationCount = 0;
354 +        Integer value;
355 +        IncFunction(ExecutionMode m) { this.m = m; }
356 +        public Integer apply(Integer x) {
357 +            m.checkExecutionMode();
358 +            invocationCount++;
359 +            return value = inc(x);
360 +        }
361 +    }
362 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
363 +        final ExecutionMode m;
364 +        int invocationCount = 0;
365 +        Integer value;
366 +        // Check this action was invoked exactly once when result is computed.
367 +        SubtractAction(ExecutionMode m) { this.m = m; }
368 +        public void accept(Integer x, Integer y) {
369 +            m.checkExecutionMode();
370 +            invocationCount++;
371 +            value = subtract(x, y);
372 +        }
373 +    }
374 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
375 +        final ExecutionMode m;
376 +        int invocationCount = 0;
377 +        Integer value;
378 +        // Check this action was invoked exactly once when result is computed.
379 +        SubtractFunction(ExecutionMode m) { this.m = m; }
380 +        public Integer apply(Integer x, Integer y) {
381 +            m.checkExecutionMode();
382 +            invocationCount++;
383 +            return value = subtract(x, y);
384 +        }
385 +    }
386 +    static final class Noop implements Runnable {
387 +        final ExecutionMode m;
388 +        int invocationCount = 0;
389 +        Noop(ExecutionMode m) { this.m = m; }
390 +        public void run() {
391 +            m.checkExecutionMode();
392 +            invocationCount++;
393 +        }
394 +    }
395 +
396 +    static final class FailingSupplier implements Supplier<Integer> {
397 +        final ExecutionMode m;
398 +        int invocationCount = 0;
399 +        FailingSupplier(ExecutionMode m) { this.m = m; }
400 +        public Integer get() {
401 +            m.checkExecutionMode();
402 +            invocationCount++;
403 +            throw new CFException();
404 +        }
405 +    }
406 +    static final class FailingConsumer implements Consumer<Integer> {
407 +        final ExecutionMode m;
408 +        int invocationCount = 0;
409 +        FailingConsumer(ExecutionMode m) { this.m = m; }
410 +        public void accept(Integer x) {
411 +            m.checkExecutionMode();
412 +            invocationCount++;
413 +            throw new CFException();
414 +        }
415 +    }
416 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
417 +        final ExecutionMode m;
418 +        int invocationCount = 0;
419 +        FailingBiConsumer(ExecutionMode m) { this.m = m; }
420 +        public void accept(Integer x, Integer y) {
421 +            m.checkExecutionMode();
422 +            invocationCount++;
423 +            throw new CFException();
424 +        }
425 +    }
426 +    static final class FailingFunction implements Function<Integer, Integer> {
427 +        final ExecutionMode m;
428 +        int invocationCount = 0;
429 +        FailingFunction(ExecutionMode m) { this.m = m; }
430 +        public Integer apply(Integer x) {
431 +            m.checkExecutionMode();
432 +            invocationCount++;
433 +            throw new CFException();
434 +        }
435 +    }
436 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
437 +        final ExecutionMode m;
438 +        int invocationCount = 0;
439 +        FailingBiFunction(ExecutionMode m) { this.m = m; }
440 +        public Integer apply(Integer x, Integer y) {
441 +            m.checkExecutionMode();
442 +            invocationCount++;
443 +            throw new CFException();
444 +        }
445 +    }
446 +    static final class FailingRunnable implements Runnable {
447 +        final ExecutionMode m;
448 +        int invocationCount = 0;
449 +        FailingRunnable(ExecutionMode m) { this.m = m; }
450 +        public void run() {
451 +            m.checkExecutionMode();
452 +            invocationCount++;
453 +            throw new CFException();
454 +        }
455 +    }
456 +
457 +    static final class CompletableFutureInc
458 +        implements Function<Integer, CompletableFuture<Integer>> {
459 +        final ExecutionMode m;
460 +        int invocationCount = 0;
461 +        CompletableFutureInc(ExecutionMode m) { this.m = m; }
462 +        public CompletableFuture<Integer> apply(Integer x) {
463 +            m.checkExecutionMode();
464 +            invocationCount++;
465 +            CompletableFuture<Integer> f = new CompletableFuture<>();
466 +            f.complete(inc(x));
467 +            return f;
468 +        }
469 +    }
470 +
471 +    static final class FailingCompletableFutureFunction
472 +        implements Function<Integer, CompletableFuture<Integer>> {
473 +        final ExecutionMode m;
474 +        int invocationCount = 0;
475 +        FailingCompletableFutureFunction(ExecutionMode m) { this.m = m; }
476 +        public CompletableFuture<Integer> apply(Integer x) {
477 +            m.checkExecutionMode();
478 +            invocationCount++;
479 +            throw new CFException();
480 +        }
481 +    }
482 +
483 +    // Used for explicit executor tests
484 +    static final class ThreadExecutor implements Executor {
485 +        final AtomicInteger count = new AtomicInteger(0);
486 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
487 +        static boolean startedCurrentThread() {
488 +            return Thread.currentThread().getThreadGroup() == tg;
489 +        }
490 +
491 +        public void execute(Runnable r) {
492 +            count.getAndIncrement();
493 +            new Thread(tg, r).start();
494 +        }
495 +    }
496 +
497 +    /**
498 +     * Permits the testing of parallel code for the 3 different
499 +     * execution modes without repeating all the testing code.
500 +     */
501 +    enum ExecutionMode {
502 +        DEFAULT {
503 +            public void checkExecutionMode() {
504 +                assertNull(ForkJoinTask.getPool());
505 +            }
506 +            public <T> CompletableFuture<Void> thenRun
507 +                (CompletableFuture<T> f, Runnable a) {
508 +                return f.thenRun(a);
509 +            }
510 +            public <T> CompletableFuture<Void> thenAccept
511 +                (CompletableFuture<T> f, Consumer<? super T> a) {
512 +                return f.thenAccept(a);
513 +            }
514 +            public <T,U> CompletableFuture<U> thenApply
515 +                (CompletableFuture<T> f, Function<? super T,U> a) {
516 +                return f.thenApply(a);
517 +            }
518 +            public <T,U> CompletableFuture<U> thenCompose
519 +                (CompletableFuture<T> f,
520 +                 Function<? super T,? extends CompletionStage<U>> a) {
521 +                return f.thenCompose(a);
522 +            }
523 +            public <T,U> CompletableFuture<U> handle
524 +                (CompletableFuture<T> f,
525 +                 BiFunction<? super T,Throwable,? extends U> a) {
526 +                return f.handle(a);
527 +            }
528 +            public <T> CompletableFuture<T> whenComplete
529 +                (CompletableFuture<T> f,
530 +                 BiConsumer<? super T,? super Throwable> a) {
531 +                return f.whenComplete(a);
532 +            }
533 +            public <T,U> CompletableFuture<Void> runAfterBoth
534 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
535 +                return f.runAfterBoth(g, a);
536 +            }
537 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
538 +                (CompletableFuture<T> f,
539 +                 CompletionStage<? extends U> g,
540 +                 BiConsumer<? super T,? super U> a) {
541 +                return f.thenAcceptBoth(g, a);
542 +            }
543 +            public <T,U,V> CompletableFuture<V> thenCombine
544 +                (CompletableFuture<T> f,
545 +                 CompletionStage<? extends U> g,
546 +                 BiFunction<? super T,? super U,? extends V> a) {
547 +                return f.thenCombine(g, a);
548 +            }
549 +            public <T> CompletableFuture<Void> runAfterEither
550 +                (CompletableFuture<T> f,
551 +                 CompletionStage<?> g,
552 +                 java.lang.Runnable a) {
553 +                return f.runAfterEither(g, a);
554 +            }
555 +            public <T> CompletableFuture<Void> acceptEither
556 +                (CompletableFuture<T> f,
557 +                 CompletionStage<? extends T> g,
558 +                 Consumer<? super T> a) {
559 +                return f.acceptEither(g, a);
560 +            }
561 +            public <T,U> CompletableFuture<U> applyToEither
562 +                (CompletableFuture<T> f,
563 +                 CompletionStage<? extends T> g,
564 +                 Function<? super T,U> a) {
565 +                return f.applyToEither(g, a);
566 +            }
567 +        },
568 +
569 +        ASYNC {
570 +            public void checkExecutionMode() {
571 +                assertSame(ForkJoinPool.commonPool(),
572 +                           ForkJoinTask.getPool());
573 +            }
574 +            public <T> CompletableFuture<Void> thenRun
575 +                (CompletableFuture<T> f, Runnable a) {
576 +                return f.thenRunAsync(a);
577 +            }
578 +            public <T> CompletableFuture<Void> thenAccept
579 +                (CompletableFuture<T> f, Consumer<? super T> a) {
580 +                return f.thenAcceptAsync(a);
581 +            }
582 +            public <T,U> CompletableFuture<U> thenApply
583 +                (CompletableFuture<T> f, Function<? super T,U> a) {
584 +                return f.thenApplyAsync(a);
585 +            }
586 +            public <T,U> CompletableFuture<U> thenCompose
587 +                (CompletableFuture<T> f,
588 +                 Function<? super T,? extends CompletionStage<U>> a) {
589 +                return f.thenComposeAsync(a);
590 +            }
591 +            public <T,U> CompletableFuture<U> handle
592 +                (CompletableFuture<T> f,
593 +                 BiFunction<? super T,Throwable,? extends U> a) {
594 +                return f.handleAsync(a);
595 +            }
596 +            public <T> CompletableFuture<T> whenComplete
597 +                (CompletableFuture<T> f,
598 +                 BiConsumer<? super T,? super Throwable> a) {
599 +                return f.whenCompleteAsync(a);
600 +            }
601 +            public <T,U> CompletableFuture<Void> runAfterBoth
602 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
603 +                return f.runAfterBothAsync(g, a);
604 +            }
605 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
606 +                (CompletableFuture<T> f,
607 +                 CompletionStage<? extends U> g,
608 +                 BiConsumer<? super T,? super U> a) {
609 +                return f.thenAcceptBothAsync(g, a);
610 +            }
611 +            public <T,U,V> CompletableFuture<V> thenCombine
612 +                (CompletableFuture<T> f,
613 +                 CompletionStage<? extends U> g,
614 +                 BiFunction<? super T,? super U,? extends V> a) {
615 +                return f.thenCombineAsync(g, a);
616 +            }
617 +            public <T> CompletableFuture<Void> runAfterEither
618 +                (CompletableFuture<T> f,
619 +                 CompletionStage<?> g,
620 +                 java.lang.Runnable a) {
621 +                return f.runAfterEitherAsync(g, a);
622 +            }
623 +            public <T> CompletableFuture<Void> acceptEither
624 +                (CompletableFuture<T> f,
625 +                 CompletionStage<? extends T> g,
626 +                 Consumer<? super T> a) {
627 +                return f.acceptEitherAsync(g, a);
628 +            }
629 +            public <T,U> CompletableFuture<U> applyToEither
630 +                (CompletableFuture<T> f,
631 +                 CompletionStage<? extends T> g,
632 +                 Function<? super T,U> a) {
633 +                return f.applyToEitherAsync(g, a);
634 +            }
635 +        },
636 +
637 +        EXECUTOR {
638 +            public void checkExecutionMode() {
639 +                assertTrue(ThreadExecutor.startedCurrentThread());
640 +            }
641 +            public <T> CompletableFuture<Void> thenRun
642 +                (CompletableFuture<T> f, Runnable a) {
643 +                return f.thenRunAsync(a, new ThreadExecutor());
644 +            }
645 +            public <T> CompletableFuture<Void> thenAccept
646 +                (CompletableFuture<T> f, Consumer<? super T> a) {
647 +                return f.thenAcceptAsync(a, new ThreadExecutor());
648 +            }
649 +            public <T,U> CompletableFuture<U> thenApply
650 +                (CompletableFuture<T> f, Function<? super T,U> a) {
651 +                return f.thenApplyAsync(a, new ThreadExecutor());
652 +            }
653 +            public <T,U> CompletableFuture<U> thenCompose
654 +                (CompletableFuture<T> f,
655 +                 Function<? super T,? extends CompletionStage<U>> a) {
656 +                return f.thenComposeAsync(a, new ThreadExecutor());
657 +            }
658 +            public <T,U> CompletableFuture<U> handle
659 +                (CompletableFuture<T> f,
660 +                 BiFunction<? super T,Throwable,? extends U> a) {
661 +                return f.handleAsync(a, new ThreadExecutor());
662 +            }
663 +            public <T> CompletableFuture<T> whenComplete
664 +                (CompletableFuture<T> f,
665 +                 BiConsumer<? super T,? super Throwable> a) {
666 +                return f.whenCompleteAsync(a, new ThreadExecutor());
667 +            }
668 +            public <T,U> CompletableFuture<Void> runAfterBoth
669 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
670 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
671 +            }
672 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
673 +                (CompletableFuture<T> f,
674 +                 CompletionStage<? extends U> g,
675 +                 BiConsumer<? super T,? super U> a) {
676 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
677 +            }
678 +            public <T,U,V> CompletableFuture<V> thenCombine
679 +                (CompletableFuture<T> f,
680 +                 CompletionStage<? extends U> g,
681 +                 BiFunction<? super T,? super U,? extends V> a) {
682 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
683 +            }
684 +            public <T> CompletableFuture<Void> runAfterEither
685 +                (CompletableFuture<T> f,
686 +                 CompletionStage<?> g,
687 +                 java.lang.Runnable a) {
688 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
689 +            }
690 +            public <T> CompletableFuture<Void> acceptEither
691 +                (CompletableFuture<T> f,
692 +                 CompletionStage<? extends T> g,
693 +                 Consumer<? super T> a) {
694 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
695 +            }
696 +            public <T,U> CompletableFuture<U> applyToEither
697 +                (CompletableFuture<T> f,
698 +                 CompletionStage<? extends T> g,
699 +                 Function<? super T,U> a) {
700 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
701 +            }
702 +        };
703 +
704 +        public abstract void checkExecutionMode();
705 +        public abstract <T> CompletableFuture<Void> thenRun
706 +            (CompletableFuture<T> f, Runnable a);
707 +        public abstract <T> CompletableFuture<Void> thenAccept
708 +            (CompletableFuture<T> f, Consumer<? super T> a);
709 +        public abstract <T,U> CompletableFuture<U> thenApply
710 +            (CompletableFuture<T> f, Function<? super T,U> a);
711 +        public abstract <T,U> CompletableFuture<U> thenCompose
712 +            (CompletableFuture<T> f,
713 +             Function<? super T,? extends CompletionStage<U>> a);
714 +        public abstract <T,U> CompletableFuture<U> handle
715 +            (CompletableFuture<T> f,
716 +             BiFunction<? super T,Throwable,? extends U> a);
717 +        public abstract <T> CompletableFuture<T> whenComplete
718 +            (CompletableFuture<T> f,
719 +             BiConsumer<? super T,? super Throwable> a);
720 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
721 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
722 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
723 +            (CompletableFuture<T> f,
724 +             CompletionStage<? extends U> g,
725 +             BiConsumer<? super T,? super U> a);
726 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
727 +            (CompletableFuture<T> f,
728 +             CompletionStage<? extends U> g,
729 +             BiFunction<? super T,? super U,? extends V> a);
730 +        public abstract <T> CompletableFuture<Void> runAfterEither
731 +            (CompletableFuture<T> f,
732 +             CompletionStage<?> g,
733 +             java.lang.Runnable a);
734 +        public abstract <T> CompletableFuture<Void> acceptEither
735 +            (CompletableFuture<T> f,
736 +             CompletionStage<? extends T> g,
737 +             Consumer<? super T> a);
738 +        public abstract <T,U> CompletableFuture<U> applyToEither
739 +            (CompletableFuture<T> f,
740 +             CompletionStage<? extends T> g,
741 +             Function<? super T,U> a);
742 +    }
743 +
744 +    /**
745 +     * exceptionally action is not invoked when source completes
746 +     * normally, and source result is propagated
747 +     */
748 +    public void testExceptionally_normalCompletion() {
749 +        for (boolean createIncomplete : new boolean[] { true, false })
750 +        for (Integer v1 : new Integer[] { 1, null })
751 +    {
752 +        final AtomicInteger a = new AtomicInteger(0);
753 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
754 +        if (!createIncomplete) f.complete(v1);
755 +        final CompletableFuture<Integer> g = f.exceptionally
756 +            ((Throwable t) -> {
757 +                // Should not be called
758 +                a.getAndIncrement();
759 +                throw new AssertionError();
760 +            });
761 +        if (createIncomplete) f.complete(v1);
762 +
763 +        checkCompletedNormally(g, v1);
764 +        checkCompletedNormally(f, v1);
765 +        assertEquals(0, a.get());
766 +    }}
767 +
768 +
769 +    /**
770 +     * exceptionally action completes with function value on source
771 +     * exception
772 +     */
773 +    public void testExceptionally_exceptionalCompletion() {
774 +        for (boolean createIncomplete : new boolean[] { true, false })
775 +        for (Integer v1 : new Integer[] { 1, null })
776 +    {
777 +        final AtomicInteger a = new AtomicInteger(0);
778 +        final CFException ex = new CFException();
779 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
780 +        if (!createIncomplete) f.completeExceptionally(ex);
781 +        final CompletableFuture<Integer> g = f.exceptionally
782 +            ((Throwable t) -> {
783 +                threadAssertSame(t, ex);
784 +                a.getAndIncrement();
785 +                return v1;
786 +            });
787 +        if (createIncomplete) f.completeExceptionally(ex);
788 +
789 +        checkCompletedNormally(g, v1);
790 +        assertEquals(1, a.get());
791 +    }}
792 +
793 +    public void testExceptionally_exceptionalCompletionActionFailed() {
794 +        for (boolean createIncomplete : new boolean[] { true, false })
795 +        for (Integer v1 : new Integer[] { 1, null })
796 +    {
797 +        final AtomicInteger a = new AtomicInteger(0);
798 +        final CFException ex1 = new CFException();
799 +        final CFException ex2 = new CFException();
800 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
801 +        if (!createIncomplete) f.completeExceptionally(ex1);
802 +        final CompletableFuture<Integer> g = f.exceptionally
803 +            ((Throwable t) -> {
804 +                threadAssertSame(t, ex1);
805 +                a.getAndIncrement();
806 +                throw ex2;
807 +            });
808 +        if (createIncomplete) f.completeExceptionally(ex1);
809 +
810 +        checkCompletedWithWrappedCFException(g, ex2);
811 +        assertEquals(1, a.get());
812 +    }}
813 +
814 +    /**
815 +     * handle action completes normally with function value on normal
816 +     * completion of source
817 +     */
818 +    public void testHandle_normalCompletion() {
819 +        for (ExecutionMode m : ExecutionMode.values())
820 +        for (boolean createIncomplete : new boolean[] { true, false })
821 +        for (Integer v1 : new Integer[] { 1, null })
822 +    {
823 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
824 +        final AtomicInteger a = new AtomicInteger(0);
825 +        if (!createIncomplete) f.complete(v1);
826 +        final CompletableFuture<Integer> g = m.handle
827 +            (f,
828 +             (Integer x, Throwable t) -> {
829 +                threadAssertSame(x, v1);
830 +                threadAssertNull(t);
831 +                a.getAndIncrement();
832 +                return inc(v1);
833 +            });
834 +        if (createIncomplete) f.complete(v1);
835 +
836 +        checkCompletedNormally(g, inc(v1));
837 +        checkCompletedNormally(f, v1);
838 +        assertEquals(1, a.get());
839 +    }}
840 +
841 +    /**
842 +     * handle action completes normally with function value on
843 +     * exceptional completion of source
844 +     */
845 +    public void testHandle_exceptionalCompletion() {
846 +        for (ExecutionMode m : ExecutionMode.values())
847 +        for (boolean createIncomplete : new boolean[] { true, false })
848 +        for (Integer v1 : new Integer[] { 1, null })
849 +    {
850 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
851 +        final AtomicInteger a = new AtomicInteger(0);
852 +        final CFException ex = new CFException();
853 +        if (!createIncomplete) f.completeExceptionally(ex);
854 +        final CompletableFuture<Integer> g = m.handle
855 +            (f,
856 +             (Integer x, Throwable t) -> {
857 +                threadAssertNull(x);
858 +                threadAssertSame(t, ex);
859 +                a.getAndIncrement();
860 +                return v1;
861 +            });
862 +        if (createIncomplete) f.completeExceptionally(ex);
863 +
864 +        checkCompletedNormally(g, v1);
865 +        checkCompletedWithWrappedCFException(f, ex);
866 +        assertEquals(1, a.get());
867 +    }}
868 +
869 +    /**
870 +     * handle action completes normally with function value on
871 +     * cancelled source
872 +     */
873 +    public void testHandle_sourceCancelled() {
874 +        for (ExecutionMode m : ExecutionMode.values())
875 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
876 +        for (boolean createIncomplete : new boolean[] { true, false })
877 +        for (Integer v1 : new Integer[] { 1, null })
878 +    {
879 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
880 +        final AtomicInteger a = new AtomicInteger(0);
881 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
882 +        final CompletableFuture<Integer> g = m.handle
883 +            (f,
884 +             (Integer x, Throwable t) -> {
885 +                threadAssertNull(x);
886 +                threadAssertTrue(t instanceof CancellationException);
887 +                a.getAndIncrement();
888 +                return v1;
889 +            });
890 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
891 +
892 +        checkCompletedNormally(g, v1);
893 +        checkCancelled(f);
894 +        assertEquals(1, a.get());
895 +    }}
896 +
897 +    /**
898 +     * handle result completes exceptionally if action does
899 +     */
900 +    public void testHandle_sourceFailedActionFailed() {
901 +        for (ExecutionMode m : ExecutionMode.values())
902 +        for (boolean createIncomplete : new boolean[] { true, false })
903 +    {
904 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
905 +        final AtomicInteger a = new AtomicInteger(0);
906 +        final CFException ex1 = new CFException();
907 +        final CFException ex2 = new CFException();
908 +        if (!createIncomplete) f.completeExceptionally(ex1);
909 +        final CompletableFuture<Integer> g = m.handle
910 +            (f,
911 +             (Integer x, Throwable t) -> {
912 +                threadAssertNull(x);
913 +                threadAssertSame(ex1, t);
914 +                a.getAndIncrement();
915 +                throw ex2;
916 +            });
917 +        if (createIncomplete) f.completeExceptionally(ex1);
918 +
919 +        checkCompletedWithWrappedCFException(g, ex2);
920 +        checkCompletedWithWrappedCFException(f, ex1);
921 +        assertEquals(1, a.get());
922 +    }}
923 +
924 +    public void testHandle_sourceCompletedNormallyActionFailed() {
925 +        for (ExecutionMode m : ExecutionMode.values())
926 +        for (boolean createIncomplete : new boolean[] { true, false })
927 +        for (Integer v1 : new Integer[] { 1, null })
928 +    {
929 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
930 +        final AtomicInteger a = new AtomicInteger(0);
931 +        final CFException ex = new CFException();
932 +        if (!createIncomplete) f.complete(v1);
933 +        final CompletableFuture<Integer> g = m.handle
934 +            (f,
935 +             (Integer x, Throwable t) -> {
936 +                threadAssertSame(x, v1);
937 +                threadAssertNull(t);
938 +                a.getAndIncrement();
939 +                throw ex;
940 +            });
941 +        if (createIncomplete) f.complete(v1);
942 +
943 +        checkCompletedWithWrappedCFException(g, ex);
944 +        checkCompletedNormally(f, v1);
945 +        assertEquals(1, a.get());
946 +    }}
947 +
948 +    /**
949 +     * runAsync completes after running Runnable
950 +     */
951 +    public void testRunAsync() {
952 +        Noop r = new Noop(ExecutionMode.ASYNC);
953 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
954 +        assertNull(f.join());
955 +        assertEquals(1, r.invocationCount);
956 +        checkCompletedNormally(f, null);
957 +    }
958 +
959 +    /**
960 +     * runAsync with executor completes after running Runnable
961 +     */
962 +    public void testRunAsync2() {
963 +        Noop r = new Noop(ExecutionMode.EXECUTOR);
964 +        ThreadExecutor exec = new ThreadExecutor();
965 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
966 +        assertNull(f.join());
967 +        assertEquals(1, r.invocationCount);
968 +        checkCompletedNormally(f, null);
969 +        assertEquals(1, exec.count.get());
970 +    }
971 +
972 +    /**
973 +     * failing runAsync completes exceptionally after running Runnable
974 +     */
975 +    public void testRunAsync3() {
976 +        FailingRunnable r = new FailingRunnable(ExecutionMode.ASYNC);
977 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
978 +        checkCompletedWithWrappedCFException(f);
979 +        assertEquals(1, r.invocationCount);
980 +    }
981 +
982 +    /**
983 +     * supplyAsync completes with result of supplier
984 +     */
985 +    public void testSupplyAsync() {
986 +        CompletableFuture<Integer> f;
987 +        f = CompletableFuture.supplyAsync(supplyOne);
988 +        assertEquals(f.join(), one);
989 +        checkCompletedNormally(f, one);
990 +    }
991 +
992 +    /**
993 +     * supplyAsync with executor completes with result of supplier
994 +     */
995 +    public void testSupplyAsync2() {
996 +        CompletableFuture<Integer> f;
997 +        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
998 +        assertEquals(f.join(), one);
999 +        checkCompletedNormally(f, one);
1000 +    }
1001 +
1002 +    /**
1003 +     * Failing supplyAsync completes exceptionally
1004 +     */
1005 +    public void testSupplyAsync3() {
1006 +        FailingSupplier r = new FailingSupplier(ExecutionMode.ASYNC);
1007 +        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
1008 +        checkCompletedWithWrappedCFException(f);
1009 +        assertEquals(1, r.invocationCount);
1010 +    }
1011 +
1012 +    // seq completion methods
1013 +
1014 +    /**
1015 +     * thenRun result completes normally after normal completion of source
1016 +     */
1017 +    public void testThenRun_normalCompletion() {
1018 +        for (ExecutionMode m : ExecutionMode.values())
1019 +        for (boolean createIncomplete : new boolean[] { true, false })
1020 +        for (Integer v1 : new Integer[] { 1, null })
1021 +    {
1022 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1023 +        final Noop r = new Noop(m);
1024 +        if (!createIncomplete) f.complete(v1);
1025 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1026 +        if (createIncomplete) {
1027 +            checkIncomplete(g);
1028 +            f.complete(v1);
1029 +        }
1030 +
1031 +        checkCompletedNormally(g, null);
1032 +        checkCompletedNormally(f, v1);
1033 +        assertEquals(1, r.invocationCount);
1034 +    }}
1035 +
1036 +    /**
1037 +     * thenRun result completes exceptionally after exceptional
1038 +     * completion of source
1039 +     */
1040 +    public void testThenRun_exceptionalCompletion() {
1041 +        for (ExecutionMode m : ExecutionMode.values())
1042 +        for (boolean createIncomplete : new boolean[] { true, false })
1043 +    {
1044 +        final CFException ex = new CFException();
1045 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1046 +        final Noop r = new Noop(m);
1047 +        if (!createIncomplete) f.completeExceptionally(ex);
1048 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1049 +        if (createIncomplete) {
1050 +            checkIncomplete(g);
1051 +            f.completeExceptionally(ex);
1052 +        }
1053 +
1054 +        checkCompletedWithWrappedCFException(g, ex);
1055 +        checkCompletedWithWrappedCFException(f, ex);
1056 +        assertEquals(0, r.invocationCount);
1057 +    }}
1058 +
1059 +    /**
1060 +     * thenRun result completes exceptionally if source cancelled
1061 +     */
1062 +    public void testThenRun_sourceCancelled() {
1063 +        for (ExecutionMode m : ExecutionMode.values())
1064 +        for (boolean createIncomplete : new boolean[] { true, false })
1065 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1066 +    {
1067 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1068 +        final Noop r = new Noop(m);
1069 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1070 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1071 +        if (createIncomplete) {
1072 +            checkIncomplete(g);
1073 +            assertTrue(f.cancel(mayInterruptIfRunning));
1074 +        }
1075 +
1076 +        checkCompletedWithWrappedCancellationException(g);
1077 +        checkCancelled(f);
1078 +        assertEquals(0, r.invocationCount);
1079 +    }}
1080 +
1081 +    /**
1082 +     * thenRun result completes exceptionally if action does
1083 +     */
1084 +    public void testThenRun_actionFailed() {
1085 +        for (ExecutionMode m : ExecutionMode.values())
1086 +        for (boolean createIncomplete : new boolean[] { true, false })
1087 +        for (Integer v1 : new Integer[] { 1, null })
1088 +    {
1089 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1090 +        final FailingRunnable r = new FailingRunnable(m);
1091 +        if (!createIncomplete) f.complete(v1);
1092 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1093 +        if (createIncomplete) {
1094 +            checkIncomplete(g);
1095 +            f.complete(v1);
1096 +        }
1097 +
1098 +        checkCompletedWithWrappedCFException(g);
1099 +        checkCompletedNormally(f, v1);
1100 +    }}
1101 +
1102 +    /**
1103 +     * thenApply result completes normally after normal completion of source
1104 +     */
1105 +    public void testThenApply_normalCompletion() {
1106 +        for (ExecutionMode m : ExecutionMode.values())
1107 +        for (boolean createIncomplete : new boolean[] { true, false })
1108 +        for (Integer v1 : new Integer[] { 1, null })
1109 +    {
1110 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1111 +        final IncFunction r = new IncFunction(m);
1112 +        if (!createIncomplete) f.complete(v1);
1113 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1114 +        if (createIncomplete) {
1115 +            checkIncomplete(g);
1116 +            f.complete(v1);
1117 +        }
1118 +
1119 +        checkCompletedNormally(g, inc(v1));
1120 +        checkCompletedNormally(f, v1);
1121 +        assertEquals(1, r.invocationCount);
1122 +    }}
1123 +
1124 +    /**
1125 +     * thenApply result completes exceptionally after exceptional
1126 +     * completion of source
1127 +     */
1128 +    public void testThenApply_exceptionalCompletion() {
1129 +        for (ExecutionMode m : ExecutionMode.values())
1130 +        for (boolean createIncomplete : new boolean[] { true, false })
1131 +    {
1132 +        final CFException ex = new CFException();
1133 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1134 +        final IncFunction r = new IncFunction(m);
1135 +        if (!createIncomplete) f.completeExceptionally(ex);
1136 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1137 +        if (createIncomplete) {
1138 +            checkIncomplete(g);
1139 +            f.completeExceptionally(ex);
1140 +        }
1141 +
1142 +        checkCompletedWithWrappedCFException(g, ex);
1143 +        checkCompletedWithWrappedCFException(f, ex);
1144 +        assertEquals(0, r.invocationCount);
1145 +    }}
1146 +
1147 +    /**
1148 +     * thenApply result completes exceptionally if source cancelled
1149 +     */
1150 +    public void testThenApply_sourceCancelled() {
1151 +        for (ExecutionMode m : ExecutionMode.values())
1152 +        for (boolean createIncomplete : new boolean[] { true, false })
1153 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1154 +    {
1155 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1156 +        final IncFunction r = new IncFunction(m);
1157 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1158 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1159 +        if (createIncomplete) {
1160 +            checkIncomplete(g);
1161 +            assertTrue(f.cancel(mayInterruptIfRunning));
1162 +        }
1163 +
1164 +        checkCompletedWithWrappedCancellationException(g);
1165 +        checkCancelled(f);
1166 +        assertEquals(0, r.invocationCount);
1167 +    }}
1168 +
1169 +    /**
1170 +     * thenApply result completes exceptionally if action does
1171 +     */
1172 +    public void testThenApply_actionFailed() {
1173 +        for (ExecutionMode m : ExecutionMode.values())
1174 +        for (boolean createIncomplete : new boolean[] { true, false })
1175 +        for (Integer v1 : new Integer[] { 1, null })
1176 +    {
1177 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1178 +        final FailingFunction r = new FailingFunction(m);
1179 +        if (!createIncomplete) f.complete(v1);
1180 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1181 +        if (createIncomplete) {
1182 +            checkIncomplete(g);
1183 +            f.complete(v1);
1184 +        }
1185 +
1186 +        checkCompletedWithWrappedCFException(g);
1187 +        checkCompletedNormally(f, v1);
1188 +    }}
1189 +
1190 +    /**
1191 +     * thenAccept result completes normally after normal completion of source
1192 +     */
1193 +    public void testThenAccept_normalCompletion() {
1194 +        for (ExecutionMode m : ExecutionMode.values())
1195 +        for (boolean createIncomplete : new boolean[] { true, false })
1196 +        for (Integer v1 : new Integer[] { 1, null })
1197 +    {
1198 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1199 +        final IncAction r = new IncAction();
1200 +        if (!createIncomplete) f.complete(v1);
1201 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1202 +        if (createIncomplete) {
1203 +            checkIncomplete(g);
1204 +            f.complete(v1);
1205 +        }
1206 +
1207 +        checkCompletedNormally(g, null);
1208 +        checkCompletedNormally(f, v1);
1209 +        assertEquals(1, r.invocationCount);
1210 +        assertEquals(inc(v1), r.value);
1211 +    }}
1212 +
1213 +    /**
1214 +     * thenAccept result completes exceptionally after exceptional
1215 +     * completion of source
1216 +     */
1217 +    public void testThenAccept_exceptionalCompletion() {
1218 +        for (ExecutionMode m : ExecutionMode.values())
1219 +        for (boolean createIncomplete : new boolean[] { true, false })
1220 +    {
1221 +        final CFException ex = new CFException();
1222 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1223 +        final IncAction r = new IncAction();
1224 +        if (!createIncomplete) f.completeExceptionally(ex);
1225 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1226 +        if (createIncomplete) {
1227 +            checkIncomplete(g);
1228 +            f.completeExceptionally(ex);
1229 +        }
1230 +
1231 +        checkCompletedWithWrappedCFException(g, ex);
1232 +        checkCompletedWithWrappedCFException(f, ex);
1233 +        assertEquals(0, r.invocationCount);
1234 +    }}
1235 +
1236 +    /**
1237 +     * thenAccept result completes exceptionally if action does
1238 +     */
1239 +    public void testThenAccept_actionFailed() {
1240 +        for (ExecutionMode m : ExecutionMode.values())
1241 +        for (boolean createIncomplete : new boolean[] { true, false })
1242 +        for (Integer v1 : new Integer[] { 1, null })
1243 +    {
1244 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1245 +        final FailingConsumer r = new FailingConsumer(m);
1246 +        if (!createIncomplete) f.complete(v1);
1247 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1248 +        if (createIncomplete) {
1249 +            checkIncomplete(g);
1250 +            f.complete(v1);
1251 +        }
1252 +
1253 +        checkCompletedWithWrappedCFException(g);
1254 +        checkCompletedNormally(f, v1);
1255 +    }}
1256 +
1257 +    /**
1258 +     * thenAccept result completes exceptionally if source cancelled
1259 +     */
1260 +    public void testThenAccept_sourceCancelled() {
1261 +        for (ExecutionMode m : ExecutionMode.values())
1262 +        for (boolean createIncomplete : new boolean[] { true, false })
1263 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1264 +    {
1265 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1266 +        final IncAction r = new IncAction();
1267 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1268 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1269 +        if (createIncomplete) {
1270 +            checkIncomplete(g);
1271 +            assertTrue(f.cancel(mayInterruptIfRunning));
1272 +        }
1273 +
1274 +        checkCompletedWithWrappedCancellationException(g);
1275 +        checkCancelled(f);
1276 +        assertEquals(0, r.invocationCount);
1277 +    }}
1278 +
1279 +    /**
1280 +     * thenCombine result completes normally after normal completion
1281 +     * of sources
1282 +     */
1283 +    public void testThenCombine_normalCompletion() {
1284 +        for (ExecutionMode m : ExecutionMode.values())
1285 +        for (boolean createIncomplete : new boolean[] { true, false })
1286 +        for (boolean fFirst : new boolean[] { true, false })
1287 +        for (Integer v1 : new Integer[] { 1, null })
1288 +        for (Integer v2 : new Integer[] { 2, null })
1289 +    {
1290 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1291 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1292 +        final SubtractFunction r = new SubtractFunction(m);
1293 +
1294 +        if (fFirst) f.complete(v1); else g.complete(v2);
1295 +        if (!createIncomplete)
1296 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1297 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1298 +        if (createIncomplete) {
1299 +            checkIncomplete(h);
1300 +            assertEquals(0, r.invocationCount);
1301 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1302 +        }
1303 +
1304 +        checkCompletedNormally(h, subtract(v1, v2));
1305 +        checkCompletedNormally(f, v1);
1306 +        checkCompletedNormally(g, v2);
1307 +        assertEquals(1, r.invocationCount);
1308 +    }}
1309 +
1310 +    /**
1311 +     * thenCombine result completes exceptionally after exceptional
1312 +     * completion of either source
1313 +     */
1314 +    public void testThenCombine_exceptionalCompletion() {
1315 +        for (ExecutionMode m : ExecutionMode.values())
1316 +        for (boolean createIncomplete : new boolean[] { true, false })
1317 +        for (boolean fFirst : new boolean[] { true, false })
1318 +        for (Integer v1 : new Integer[] { 1, null })
1319 +    {
1320 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1321 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1322 +        final CFException ex = new CFException();
1323 +        final SubtractFunction r = new SubtractFunction(m);
1324 +
1325 +        (fFirst ? f : g).complete(v1);
1326 +        if (!createIncomplete)
1327 +            (!fFirst ? f : g).completeExceptionally(ex);
1328 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1329 +        if (createIncomplete) {
1330 +            checkIncomplete(h);
1331 +            (!fFirst ? f : g).completeExceptionally(ex);
1332 +        }
1333 +
1334 +        checkCompletedWithWrappedCFException(h, ex);
1335 +        assertEquals(0, r.invocationCount);
1336 +        checkCompletedNormally(fFirst ? f : g, v1);
1337 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1338 +    }}
1339 +
1340 +    /**
1341 +     * thenCombine result completes exceptionally if action does
1342 +     */
1343 +    public void testThenCombine_actionFailed() {
1344 +        for (ExecutionMode m : ExecutionMode.values())
1345 +        for (boolean fFirst : new boolean[] { true, false })
1346 +        for (Integer v1 : new Integer[] { 1, null })
1347 +        for (Integer v2 : new Integer[] { 2, null })
1348 +    {
1349 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1350 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1351 +        final FailingBiFunction r = new FailingBiFunction(m);
1352 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1353 +
1354 +        if (fFirst) {
1355 +            f.complete(v1);
1356 +            g.complete(v2);
1357 +        } else {
1358 +            g.complete(v2);
1359 +            f.complete(v1);
1360 +        }
1361 +
1362 +        checkCompletedWithWrappedCFException(h);
1363 +        checkCompletedNormally(f, v1);
1364 +        checkCompletedNormally(g, v2);
1365 +    }}
1366 +
1367 +    /**
1368 +     * thenCombine result completes exceptionally if either source cancelled
1369 +     */
1370 +    public void testThenCombine_sourceCancelled() {
1371 +        for (ExecutionMode m : ExecutionMode.values())
1372 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1373 +        for (boolean createIncomplete : new boolean[] { true, false })
1374 +        for (boolean fFirst : new boolean[] { true, false })
1375 +        for (Integer v1 : new Integer[] { 1, null })
1376 +    {
1377 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1378 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1379 +        final SubtractFunction r = new SubtractFunction(m);
1380 +
1381 +        (fFirst ? f : g).complete(v1);
1382 +        if (!createIncomplete)
1383 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1384 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1385 +        if (createIncomplete) {
1386 +            checkIncomplete(h);
1387 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1388 +        }
1389 +
1390 +        checkCompletedWithWrappedCancellationException(h);
1391 +        checkCancelled(!fFirst ? f : g);
1392 +        assertEquals(0, r.invocationCount);
1393 +        checkCompletedNormally(fFirst ? f : g, v1);
1394 +    }}
1395 +
1396 +    /**
1397 +     * thenAcceptBoth result completes normally after normal
1398 +     * completion of sources
1399 +     */
1400 +    public void testThenAcceptBoth_normalCompletion() {
1401 +        for (ExecutionMode m : ExecutionMode.values())
1402 +        for (boolean createIncomplete : new boolean[] { true, false })
1403 +        for (boolean fFirst : new boolean[] { true, false })
1404 +        for (Integer v1 : new Integer[] { 1, null })
1405 +        for (Integer v2 : new Integer[] { 2, null })
1406 +    {
1407 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1408 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1409 +        final SubtractAction r = new SubtractAction(m);
1410 +
1411 +        if (fFirst) f.complete(v1); else g.complete(v2);
1412 +        if (!createIncomplete)
1413 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1414 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1415 +        if (createIncomplete) {
1416 +            checkIncomplete(h);
1417 +            assertEquals(0, r.invocationCount);
1418 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1419 +        }
1420 +
1421 +        checkCompletedNormally(h, null);
1422 +        assertEquals(subtract(v1, v2), r.value);
1423 +        checkCompletedNormally(f, v1);
1424 +        checkCompletedNormally(g, v2);
1425 +    }}
1426 +
1427 +    /**
1428 +     * thenAcceptBoth result completes exceptionally after exceptional
1429 +     * completion of either source
1430 +     */
1431 +    public void testThenAcceptBoth_exceptionalCompletion() {
1432 +        for (ExecutionMode m : ExecutionMode.values())
1433 +        for (boolean createIncomplete : new boolean[] { true, false })
1434 +        for (boolean fFirst : new boolean[] { true, false })
1435 +        for (Integer v1 : new Integer[] { 1, null })
1436 +    {
1437 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1438 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1439 +        final CFException ex = new CFException();
1440 +        final SubtractAction r = new SubtractAction(m);
1441 +
1442 +        (fFirst ? f : g).complete(v1);
1443 +        if (!createIncomplete)
1444 +            (!fFirst ? f : g).completeExceptionally(ex);
1445 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1446 +        if (createIncomplete) {
1447 +            checkIncomplete(h);
1448 +            (!fFirst ? f : g).completeExceptionally(ex);
1449 +        }
1450 +
1451 +        checkCompletedWithWrappedCFException(h, ex);
1452 +        assertEquals(0, r.invocationCount);
1453 +        checkCompletedNormally(fFirst ? f : g, v1);
1454 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1455 +    }}
1456 +
1457 +    /**
1458 +     * thenAcceptBoth result completes exceptionally if action does
1459 +     */
1460 +    public void testThenAcceptBoth_actionFailed() {
1461 +        for (ExecutionMode m : ExecutionMode.values())
1462 +        for (boolean fFirst : new boolean[] { true, false })
1463 +        for (Integer v1 : new Integer[] { 1, null })
1464 +        for (Integer v2 : new Integer[] { 2, null })
1465 +    {
1466 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1467 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1468 +        final FailingBiConsumer r = new FailingBiConsumer(m);
1469 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1470 +
1471 +        if (fFirst) {
1472 +            f.complete(v1);
1473 +            g.complete(v2);
1474 +        } else {
1475 +            g.complete(v2);
1476 +            f.complete(v1);
1477 +        }
1478 +
1479 +        checkCompletedWithWrappedCFException(h);
1480 +        checkCompletedNormally(f, v1);
1481 +        checkCompletedNormally(g, v2);
1482 +    }}
1483 +
1484 +    /**
1485 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1486 +     */
1487 +    public void testThenAcceptBoth_sourceCancelled() {
1488 +        for (ExecutionMode m : ExecutionMode.values())
1489 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1490 +        for (boolean createIncomplete : new boolean[] { true, false })
1491 +        for (boolean fFirst : new boolean[] { true, false })
1492 +        for (Integer v1 : new Integer[] { 1, null })
1493 +    {
1494 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1495 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1496 +        final SubtractAction r = new SubtractAction(m);
1497 +
1498 +        (fFirst ? f : g).complete(v1);
1499 +        if (!createIncomplete)
1500 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1501 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1502 +        if (createIncomplete) {
1503 +            checkIncomplete(h);
1504 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1505 +        }
1506 +
1507 +        checkCompletedWithWrappedCancellationException(h);
1508 +        checkCancelled(!fFirst ? f : g);
1509 +        assertEquals(0, r.invocationCount);
1510 +        checkCompletedNormally(fFirst ? f : g, v1);
1511 +    }}
1512 +
1513 +    /**
1514 +     * runAfterBoth result completes normally after normal
1515 +     * completion of sources
1516 +     */
1517 +    public void testRunAfterBoth_normalCompletion() {
1518 +        for (ExecutionMode m : ExecutionMode.values())
1519 +        for (boolean createIncomplete : new boolean[] { true, false })
1520 +        for (boolean fFirst : new boolean[] { true, false })
1521 +        for (Integer v1 : new Integer[] { 1, null })
1522 +        for (Integer v2 : new Integer[] { 2, null })
1523 +    {
1524 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1525 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1526 +        final Noop r = new Noop(m);
1527 +
1528 +        if (fFirst) f.complete(v1); else g.complete(v2);
1529 +        if (!createIncomplete)
1530 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1531 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1532 +        if (createIncomplete) {
1533 +            checkIncomplete(h);
1534 +            assertEquals(0, r.invocationCount);
1535 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1536 +        }
1537 +
1538 +        checkCompletedNormally(h, null);
1539 +        assertEquals(1, r.invocationCount);
1540 +        checkCompletedNormally(f, v1);
1541 +        checkCompletedNormally(g, v2);
1542 +    }}
1543 +
1544 +    /**
1545 +     * runAfterBoth result completes exceptionally after exceptional
1546 +     * completion of either source
1547 +     */
1548 +    public void testRunAfterBoth_exceptionalCompletion() {
1549 +        for (ExecutionMode m : ExecutionMode.values())
1550 +        for (boolean createIncomplete : new boolean[] { true, false })
1551 +        for (boolean fFirst : new boolean[] { true, false })
1552 +        for (Integer v1 : new Integer[] { 1, null })
1553 +    {
1554 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1555 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1556 +        final CFException ex = new CFException();
1557 +        final Noop r = new Noop(m);
1558 +
1559 +        (fFirst ? f : g).complete(v1);
1560 +        if (!createIncomplete)
1561 +            (!fFirst ? f : g).completeExceptionally(ex);
1562 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1563 +        if (createIncomplete) {
1564 +            checkIncomplete(h);
1565 +            (!fFirst ? f : g).completeExceptionally(ex);
1566 +        }
1567 +
1568 +        checkCompletedWithWrappedCFException(h, ex);
1569 +        assertEquals(0, r.invocationCount);
1570 +        checkCompletedNormally(fFirst ? f : g, v1);
1571 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1572 +    }}
1573 +
1574 +    /**
1575 +     * runAfterBoth result completes exceptionally if action does
1576 +     */
1577 +    public void testRunAfterBoth_actionFailed() {
1578 +        for (ExecutionMode m : ExecutionMode.values())
1579 +        for (boolean fFirst : new boolean[] { true, false })
1580 +        for (Integer v1 : new Integer[] { 1, null })
1581 +        for (Integer v2 : new Integer[] { 2, null })
1582 +    {
1583 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1584 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1585 +        final FailingRunnable r = new FailingRunnable(m);
1586 +
1587 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r);
1588 +        if (fFirst) {
1589 +            f.complete(v1);
1590 +            g.complete(v2);
1591 +        } else {
1592 +            g.complete(v2);
1593 +            f.complete(v1);
1594 +        }
1595 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r);
1596 +
1597 +        checkCompletedWithWrappedCFException(h1);
1598 +        checkCompletedWithWrappedCFException(h2);
1599 +        checkCompletedNormally(f, v1);
1600 +        checkCompletedNormally(g, v2);
1601 +    }}
1602 +
1603 +    /**
1604 +     * runAfterBoth result completes exceptionally if either source cancelled
1605 +     */
1606 +    public void testRunAfterBoth_sourceCancelled() {
1607 +        for (ExecutionMode m : ExecutionMode.values())
1608 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1609 +        for (boolean createIncomplete : new boolean[] { true, false })
1610 +        for (boolean fFirst : new boolean[] { true, false })
1611 +        for (Integer v1 : new Integer[] { 1, null })
1612 +    {
1613 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1614 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1615 +        final Noop r = new Noop(m);
1616 +
1617 +
1618 +        (fFirst ? f : g).complete(v1);
1619 +        if (!createIncomplete)
1620 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1621 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1622 +        if (createIncomplete) {
1623 +            checkIncomplete(h);
1624 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1625 +        }
1626 +
1627 +        checkCompletedWithWrappedCancellationException(h);
1628 +        checkCancelled(!fFirst ? f : g);
1629 +        assertEquals(0, r.invocationCount);
1630 +        checkCompletedNormally(fFirst ? f : g, v1);
1631 +    }}
1632 +
1633 +    /**
1634 +     * applyToEither result completes normally after normal completion
1635 +     * of either source
1636 +     */
1637 +    public void testApplyToEither_normalCompletion() {
1638 +        for (ExecutionMode m : ExecutionMode.values())
1639 +        for (boolean createIncomplete : new boolean[] { true, false })
1640 +        for (boolean fFirst : new boolean[] { true, false })
1641 +        for (Integer v1 : new Integer[] { 1, null })
1642 +        for (Integer v2 : new Integer[] { 2, null })
1643 +    {
1644 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1645 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1646 +        final IncFunction r = new IncFunction(m);
1647 +
1648 +        if (!createIncomplete)
1649 +            if (fFirst) f.complete(v1); else g.complete(v2);
1650 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1651 +        if (createIncomplete) {
1652 +            checkIncomplete(h);
1653 +            assertEquals(0, r.invocationCount);
1654 +            if (fFirst) f.complete(v1); else g.complete(v2);
1655 +        }
1656 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1657 +        if (!fFirst) f.complete(v1); else g.complete(v2);
1658 +
1659 +        checkCompletedNormally(f, v1);
1660 +        checkCompletedNormally(g, v2);
1661 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1662 +    }}
1663 +
1664 +    public void testApplyToEither_normalCompletionBothAvailable() {
1665 +        for (ExecutionMode m : ExecutionMode.values())
1666 +        for (boolean fFirst : new boolean[] { true, false })
1667 +        for (Integer v1 : new Integer[] { 1, null })
1668 +        for (Integer v2 : new Integer[] { 2, null })
1669 +    {
1670 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1671 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1672 +        final IncFunction r = new IncFunction(m);
1673 +
1674 +        if (fFirst) {
1675 +            f.complete(v1);
1676 +            g.complete(v2);
1677 +        } else {
1678 +            g.complete(v2);
1679 +            f.complete(v1);
1680 +        }
1681 +
1682 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1683 +
1684 +        checkCompletedNormally(f, v1);
1685 +        checkCompletedNormally(g, v2);
1686 +
1687 +        // unspecified behavior
1688 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
1689 +                   Objects.equals(h.join(), inc(v2)));
1690 +        assertEquals(1, r.invocationCount);
1691 +    }}
1692 +
1693 +    /**
1694 +     * applyToEither result completes exceptionally after exceptional
1695 +     * completion of either source
1696 +     */
1697 +    public void testApplyToEither_exceptionalCompletion1() {
1698 +        for (ExecutionMode m : ExecutionMode.values())
1699 +        for (boolean createIncomplete : new boolean[] { true, false })
1700 +        for (boolean fFirst : new boolean[] { true, false })
1701 +        for (Integer v1 : new Integer[] { 1, null })
1702 +    {
1703 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1704 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1705 +        final CFException ex = new CFException();
1706 +        final IncFunction r = new IncFunction(m);
1707 +
1708 +        if (!createIncomplete) (fFirst ? f : g).completeExceptionally(ex);
1709 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1710 +        if (createIncomplete) {
1711 +            checkIncomplete(h);
1712 +            assertEquals(0, r.invocationCount);
1713 +            (fFirst ? f : g).completeExceptionally(ex);
1714 +        }
1715 +
1716 +        checkCompletedWithWrappedCFException(h, ex);
1717 +        (!fFirst ? f : g).complete(v1);
1718 +
1719 +        assertEquals(0, r.invocationCount);
1720 +        checkCompletedNormally(!fFirst ? f : g, v1);
1721 +        checkCompletedWithWrappedCFException(fFirst ? f : g, ex);
1722 +        checkCompletedWithWrappedCFException(h, ex);
1723 +    }}
1724 +
1725 +    public void testApplyToEither_exceptionalCompletion2() {
1726 +        for (ExecutionMode m : ExecutionMode.values())
1727 +        for (boolean reverseArgs : new boolean[] { true, false })
1728 +        for (boolean fFirst : new boolean[] { true, false })
1729 +        for (Integer v1 : new Integer[] { 1, null })
1730 +    {
1731 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1732 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1733 +        final IncFunction r1 = new IncFunction(m);
1734 +        final IncFunction r2 = new IncFunction(m);
1735 +        final CFException ex = new CFException();
1736 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1737 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1738 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1739 +        if (fFirst) {
1740 +            f.complete(v1);
1741 +            g.completeExceptionally(ex);
1742 +        } else {
1743 +            g.completeExceptionally(ex);
1744 +            f.complete(v1);
1745 +        }
1746 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1747 +
1748 +        // unspecified behavior
1749 +        try {
1750 +            assertEquals(inc(v1), h1.join());
1751 +            assertEquals(1, r1.invocationCount);
1752 +        } catch (CompletionException ok) {
1753 +            checkCompletedWithWrappedCFException(h1, ex);
1754 +            assertEquals(0, r1.invocationCount);
1755 +        }
1756 +
1757 +        try {
1758 +            assertEquals(inc(v1), h2.join());
1759 +            assertEquals(1, r2.invocationCount);
1760 +        } catch (CompletionException ok) {
1761 +            checkCompletedWithWrappedCFException(h2, ex);
1762 +            assertEquals(0, r2.invocationCount);
1763 +        }
1764 +
1765 +        checkCompletedWithWrappedCFException(g, ex);
1766 +        checkCompletedNormally(f, v1);
1767 +    }}
1768 +
1769 +    /**
1770 +     * applyToEither result completes exceptionally if action does
1771 +     */
1772 +    public void testApplyToEither_actionFailed1() {
1773 +        for (ExecutionMode m : ExecutionMode.values())
1774 +        for (Integer v1 : new Integer[] { 1, null })
1775 +        for (Integer v2 : new Integer[] { 2, null })
1776 +    {
1777 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1778 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1779 +        final FailingFunction r = new FailingFunction(m);
1780 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1781 +
1782 +        f.complete(v1);
1783 +        checkCompletedWithWrappedCFException(h);
1784 +        g.complete(v2);
1785 +        checkCompletedNormally(f, v1);
1786 +        checkCompletedNormally(g, v2);
1787 +    }}
1788 +
1789 +    public void testApplyToEither_actionFailed2() {
1790 +        for (ExecutionMode m : ExecutionMode.values())
1791 +        for (Integer v1 : new Integer[] { 1, null })
1792 +        for (Integer v2 : new Integer[] { 2, null })
1793 +    {
1794 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1795 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1796 +        final FailingFunction r = new FailingFunction(m);
1797 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1798 +
1799 +        g.complete(v2);
1800 +        checkCompletedWithWrappedCFException(h);
1801 +        f.complete(v1);
1802 +        checkCompletedNormally(f, v1);
1803 +        checkCompletedNormally(g, v2);
1804 +    }}
1805 +
1806 +    /**
1807 +     * applyToEither result completes exceptionally if either source cancelled
1808 +     */
1809 +    public void testApplyToEither_sourceCancelled1() {
1810 +        for (ExecutionMode m : ExecutionMode.values())
1811 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1812 +        for (boolean createIncomplete : new boolean[] { true, false })
1813 +        for (boolean fFirst : new boolean[] { true, false })
1814 +        for (Integer v1 : new Integer[] { 1, null })
1815 +    {
1816 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1817 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1818 +        final IncFunction r = new IncFunction(m);
1819 +
1820 +        if (!createIncomplete) assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1821 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1822 +        if (createIncomplete) {
1823 +            checkIncomplete(h);
1824 +            assertEquals(0, r.invocationCount);
1825 +            assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1826 +        }
1827 +
1828 +        checkCompletedWithWrappedCancellationException(h);
1829 +        (!fFirst ? f : g).complete(v1);
1830 +
1831 +        assertEquals(0, r.invocationCount);
1832 +        checkCompletedNormally(!fFirst ? f : g, v1);
1833 +        checkCancelled(fFirst ? f : g);
1834 +        checkCompletedWithWrappedCancellationException(h);
1835 +    }}
1836 +
1837 +    public void testApplyToEither_sourceCancelled2() {
1838 +        for (ExecutionMode m : ExecutionMode.values())
1839 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1840 +        for (boolean reverseArgs : new boolean[] { true, false })
1841 +        for (boolean fFirst : new boolean[] { true, false })
1842 +        for (Integer v1 : new Integer[] { 1, null })
1843 +    {
1844 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1845 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1846 +        final IncFunction r1 = new IncFunction(m);
1847 +        final IncFunction r2 = new IncFunction(m);
1848 +        final CFException ex = new CFException();
1849 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1850 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1851 +
1852 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1853 +        if (fFirst) {
1854 +            f.complete(v1);
1855 +            assertTrue(g.cancel(mayInterruptIfRunning));
1856 +        } else {
1857 +            assertTrue(g.cancel(mayInterruptIfRunning));
1858 +            f.complete(v1);
1859 +        }
1860 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1861 +
1862 +        // unspecified behavior
1863 +        try {
1864 +            assertEquals(inc(v1), h1.join());
1865 +            assertEquals(1, r1.invocationCount);
1866 +        } catch (CompletionException ok) {
1867 +            checkCompletedWithWrappedCancellationException(h1);
1868 +            assertEquals(0, r1.invocationCount);
1869 +        }
1870 +
1871 +        try {
1872 +            assertEquals(inc(v1), h2.join());
1873 +            assertEquals(1, r2.invocationCount);
1874 +        } catch (CompletionException ok) {
1875 +            checkCompletedWithWrappedCancellationException(h2);
1876 +            assertEquals(0, r2.invocationCount);
1877 +        }
1878 +
1879 +        checkCancelled(g);
1880 +        checkCompletedNormally(f, v1);
1881 +    }}
1882 +
1883 +    /**
1884 +     * acceptEither result completes normally after normal completion
1885 +     * of either source
1886 +     */
1887 +    public void testAcceptEither_normalCompletion1() {
1888 +        for (ExecutionMode m : ExecutionMode.values())
1889 +        for (Integer v1 : new Integer[] { 1, null })
1890 +        for (Integer v2 : new Integer[] { 2, null })
1891 +    {
1892 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1893 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1894 +        final IncAction r = new IncAction();
1895 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1896 +
1897 +        f.complete(v1);
1898 +        checkCompletedNormally(h, null);
1899 +        assertEquals(inc(v1), r.value);
1900 +        g.complete(v2);
1901 +
1902 +        checkCompletedNormally(f, v1);
1903 +        checkCompletedNormally(g, v2);
1904 +        checkCompletedNormally(h, null);
1905 +    }}
1906 +
1907 +    public void testAcceptEither_normalCompletion2() {
1908 +        for (ExecutionMode m : ExecutionMode.values())
1909 +        for (Integer v1 : new Integer[] { 1, null })
1910 +        for (Integer v2 : new Integer[] { 2, null })
1911 +    {
1912 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1913 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1914 +        final IncAction r = new IncAction();
1915 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1916 +
1917 +        g.complete(v2);
1918 +        checkCompletedNormally(h, null);
1919 +        assertEquals(inc(v2), r.value);
1920 +        f.complete(v1);
1921 +
1922 +        checkCompletedNormally(f, v1);
1923 +        checkCompletedNormally(g, v2);
1924 +        checkCompletedNormally(h, null);
1925 +    }}
1926 +
1927 +    public void testAcceptEither_normalCompletion3() {
1928 +        for (ExecutionMode m : ExecutionMode.values())
1929 +        for (Integer v1 : new Integer[] { 1, null })
1930 +        for (Integer v2 : new Integer[] { 2, null })
1931 +    {
1932 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1933 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1934 +        final IncAction r = new IncAction();
1935 +
1936 +        f.complete(v1);
1937 +        g.complete(v2);
1938 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1939 +
1940 +        checkCompletedNormally(h, null);
1941 +        checkCompletedNormally(f, v1);
1942 +        checkCompletedNormally(g, v2);
1943 +
1944 +        // unspecified behavior
1945 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
1946 +                   Objects.equals(r.value, inc(v2)));
1947 +    }}
1948 +
1949 +    /**
1950 +     * acceptEither result completes exceptionally after exceptional
1951 +     * completion of either source
1952 +     */
1953 +    public void testAcceptEither_exceptionalCompletion1() {
1954 +        for (ExecutionMode m : ExecutionMode.values())
1955 +        for (Integer v1 : new Integer[] { 1, null })
1956 +    {
1957 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1958 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1959 +        final IncAction r = new IncAction();
1960 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1961 +        final CFException ex = new CFException();
1962 +
1963 +        f.completeExceptionally(ex);
1964 +        checkCompletedWithWrappedCFException(h, ex);
1965 +        g.complete(v1);
1966 +
1967 +        assertEquals(0, r.invocationCount);
1968 +        checkCompletedNormally(g, v1);
1969 +        checkCompletedWithWrappedCFException(f, ex);
1970 +        checkCompletedWithWrappedCFException(h, ex);
1971 +    }}
1972 +
1973 +    public void testAcceptEither_exceptionalCompletion2() {
1974 +        for (ExecutionMode m : ExecutionMode.values())
1975 +        for (Integer v1 : new Integer[] { 1, null })
1976 +    {
1977 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1978 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1979 +        final IncAction r = new IncAction();
1980 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1981 +        final CFException ex = new CFException();
1982 +
1983 +        g.completeExceptionally(ex);
1984 +        checkCompletedWithWrappedCFException(h, ex);
1985 +        f.complete(v1);
1986 +
1987 +        assertEquals(0, r.invocationCount);
1988 +        checkCompletedNormally(f, v1);
1989 +        checkCompletedWithWrappedCFException(g, ex);
1990 +        checkCompletedWithWrappedCFException(h, ex);
1991 +    }}
1992 +
1993 +    public void testAcceptEither_exceptionalCompletion3() {
1994 +        for (ExecutionMode m : ExecutionMode.values())
1995 +        for (Integer v1 : new Integer[] { 1, null })
1996 +    {
1997 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1998 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1999 +        final IncAction r = new IncAction();
2000 +        final CFException ex = new CFException();
2001 +
2002 +        g.completeExceptionally(ex);
2003 +        f.complete(v1);
2004 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2005 +
2006 +        // unspecified behavior
2007 +        Integer v;
2008 +        try {
2009 +            assertNull(h.join());
2010 +            assertEquals(1, r.invocationCount);
2011 +            assertEquals(inc(v1), r.value);
2012 +        } catch (CompletionException ok) {
2013 +            checkCompletedWithWrappedCFException(h, ex);
2014 +            assertEquals(0, r.invocationCount);
2015 +        }
2016 +
2017 +        checkCompletedWithWrappedCFException(g, ex);
2018 +        checkCompletedNormally(f, v1);
2019 +    }}
2020 +
2021 +    public void testAcceptEither_exceptionalCompletion4() {
2022 +        for (ExecutionMode m : ExecutionMode.values())
2023 +        for (Integer v1 : new Integer[] { 1, null })
2024 +    {
2025 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2026 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2027 +        final IncAction r = new IncAction();
2028 +        final CFException ex = new CFException();
2029 +
2030 +        f.completeExceptionally(ex);
2031 +        g.complete(v1);
2032 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2033 +
2034 +        // unspecified behavior
2035 +        Integer v;
2036 +        try {
2037 +            assertNull(h.join());
2038 +            assertEquals(1, r.invocationCount);
2039 +            assertEquals(inc(v1), r.value);
2040 +        } catch (CompletionException ok) {
2041 +            checkCompletedWithWrappedCFException(h, ex);
2042 +            assertEquals(0, r.invocationCount);
2043 +        }
2044 +
2045 +        checkCompletedWithWrappedCFException(f, ex);
2046 +        checkCompletedNormally(g, v1);
2047 +    }}
2048 +
2049 +    /**
2050 +     * acceptEither result completes exceptionally if action does
2051 +     */
2052 +    public void testAcceptEither_actionFailed1() {
2053 +        for (ExecutionMode m : ExecutionMode.values())
2054 +        for (Integer v1 : new Integer[] { 1, null })
2055 +        for (Integer v2 : new Integer[] { 2, null })
2056 +    {
2057 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2058 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2059 +        final FailingConsumer r = new FailingConsumer(m);
2060 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2061 +
2062 +        f.complete(v1);
2063 +        checkCompletedWithWrappedCFException(h);
2064 +        g.complete(v2);
2065 +        checkCompletedNormally(f, v1);
2066 +        checkCompletedNormally(g, v2);
2067 +    }}
2068 +
2069 +    public void testAcceptEither_actionFailed2() {
2070 +        for (ExecutionMode m : ExecutionMode.values())
2071 +        for (Integer v1 : new Integer[] { 1, null })
2072 +        for (Integer v2 : new Integer[] { 2, null })
2073 +    {
2074 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2075 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2076 +        final FailingConsumer r = new FailingConsumer(m);
2077 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2078 +
2079 +        g.complete(v2);
2080 +        checkCompletedWithWrappedCFException(h);
2081 +        f.complete(v1);
2082 +        checkCompletedNormally(f, v1);
2083 +        checkCompletedNormally(g, v2);
2084 +    }}
2085 +
2086 +    /**
2087 +     * acceptEither result completes exceptionally if either source cancelled
2088 +     */
2089 +    public void testAcceptEither_sourceCancelled1() {
2090 +        for (ExecutionMode m : ExecutionMode.values())
2091 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2092 +        for (Integer v1 : new Integer[] { 1, null })
2093 +    {
2094 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2095 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2096 +        final IncAction r = new IncAction();
2097 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2098 +
2099 +        assertTrue(f.cancel(mayInterruptIfRunning));
2100 +        checkCompletedWithWrappedCancellationException(h);
2101 +        g.complete(v1);
2102 +
2103 +        checkCancelled(f);
2104 +        assertEquals(0, r.invocationCount);
2105 +        checkCompletedNormally(g, v1);
2106 +        checkCompletedWithWrappedCancellationException(h);
2107 +    }}
2108 +
2109 +    public void testAcceptEither_sourceCancelled2() {
2110 +        for (ExecutionMode m : ExecutionMode.values())
2111 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2112 +        for (Integer v1 : new Integer[] { 1, null })
2113 +    {
2114 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2115 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2116 +        final IncAction r = new IncAction();
2117 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2118 +
2119 +        assertTrue(g.cancel(mayInterruptIfRunning));
2120 +        checkCompletedWithWrappedCancellationException(h);
2121 +        f.complete(v1);
2122 +
2123 +        checkCancelled(g);
2124 +        assertEquals(0, r.invocationCount);
2125 +        checkCompletedNormally(f, v1);
2126 +        checkCompletedWithWrappedCancellationException(h);
2127 +    }}
2128 +
2129 +    public void testAcceptEither_sourceCancelled3() {
2130 +        for (ExecutionMode m : ExecutionMode.values())
2131 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2132 +        for (Integer v1 : new Integer[] { 1, null })
2133 +    {
2134 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2135 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2136 +        final IncAction r = new IncAction();
2137 +
2138 +        assertTrue(g.cancel(mayInterruptIfRunning));
2139 +        f.complete(v1);
2140 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2141 +
2142 +        // unspecified behavior
2143 +        Integer v;
2144 +        try {
2145 +            assertNull(h.join());
2146 +            assertEquals(1, r.invocationCount);
2147 +            assertEquals(inc(v1), r.value);
2148 +        } catch (CompletionException ok) {
2149 +            checkCompletedWithWrappedCancellationException(h);
2150 +            assertEquals(0, r.invocationCount);
2151 +        }
2152 +
2153 +        checkCancelled(g);
2154 +        checkCompletedNormally(f, v1);
2155 +    }}
2156 +
2157 +    public void testAcceptEither_sourceCancelled4() {
2158 +        for (ExecutionMode m : ExecutionMode.values())
2159 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2160 +        for (Integer v1 : new Integer[] { 1, null })
2161 +    {
2162 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2163 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2164 +        final IncAction r = new IncAction();
2165 +
2166 +        assertTrue(f.cancel(mayInterruptIfRunning));
2167 +        g.complete(v1);
2168 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2169 +
2170 +        // unspecified behavior
2171 +        Integer v;
2172 +        try {
2173 +            assertNull(h.join());
2174 +            assertEquals(1, r.invocationCount);
2175 +            assertEquals(inc(v1), r.value);
2176 +        } catch (CompletionException ok) {
2177 +            checkCompletedWithWrappedCancellationException(h);
2178 +            assertEquals(0, r.invocationCount);
2179 +        }
2180 +
2181 +        checkCancelled(f);
2182 +        checkCompletedNormally(g, v1);
2183 +    }}
2184 +
2185 +    /**
2186 +     * runAfterEither result completes normally after normal completion
2187 +     * of either source
2188 +     */
2189 +    public void testRunAfterEither_normalCompletion1() {
2190 +        for (ExecutionMode m : ExecutionMode.values())
2191 +        for (Integer v1 : new Integer[] { 1, null })
2192 +        for (Integer v2 : new Integer[] { 2, null })
2193 +    {
2194 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2195 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2196 +        final Noop r = new Noop(m);
2197 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2198 +
2199 +        f.complete(v1);
2200 +        checkCompletedNormally(h, null);
2201 +        assertEquals(1, r.invocationCount);
2202 +        g.complete(v2);
2203 +
2204 +        checkCompletedNormally(f, v1);
2205 +        checkCompletedNormally(g, v2);
2206 +        checkCompletedNormally(h, null);
2207 +        assertEquals(1, r.invocationCount);
2208 +    }}
2209 +
2210 +    public void testRunAfterEither_normalCompletion2() {
2211 +        for (ExecutionMode m : ExecutionMode.values())
2212 +        for (Integer v1 : new Integer[] { 1, null })
2213 +        for (Integer v2 : new Integer[] { 2, null })
2214 +    {
2215 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2216 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2217 +        final Noop r = new Noop(m);
2218 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2219 +
2220 +        g.complete(v2);
2221 +        checkCompletedNormally(h, null);
2222 +        assertEquals(1, r.invocationCount);
2223 +        f.complete(v1);
2224 +
2225 +        checkCompletedNormally(f, v1);
2226 +        checkCompletedNormally(g, v2);
2227 +        checkCompletedNormally(h, null);
2228 +        assertEquals(1, r.invocationCount);
2229 +        }}
2230 +
2231 +    public void testRunAfterEither_normalCompletion3() {
2232 +        for (ExecutionMode m : ExecutionMode.values())
2233 +        for (Integer v1 : new Integer[] { 1, null })
2234 +        for (Integer v2 : new Integer[] { 2, null })
2235 +    {
2236 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2237 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2238 +        final Noop r = new Noop(m);
2239 +
2240 +        f.complete(v1);
2241 +        g.complete(v2);
2242 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2243 +
2244 +        checkCompletedNormally(h, null);
2245 +        checkCompletedNormally(f, v1);
2246 +        checkCompletedNormally(g, v2);
2247 +        assertEquals(1, r.invocationCount);
2248 +    }}
2249 +
2250 +    /**
2251 +     * runAfterEither result completes exceptionally after exceptional
2252 +     * completion of either source
2253 +     */
2254 +    public void testRunAfterEither_exceptionalCompletion1() {
2255 +        for (ExecutionMode m : ExecutionMode.values())
2256 +        for (Integer v1 : new Integer[] { 1, null })
2257 +    {
2258 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2259 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2260 +        final Noop r = new Noop(m);
2261 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2262 +        final CFException ex = new CFException();
2263 +
2264 +        f.completeExceptionally(ex);
2265 +        checkCompletedWithWrappedCFException(h, ex);
2266 +        g.complete(v1);
2267 +
2268 +        assertEquals(0, r.invocationCount);
2269 +        checkCompletedNormally(g, v1);
2270 +        checkCompletedWithWrappedCFException(f, ex);
2271 +        checkCompletedWithWrappedCFException(h, ex);
2272 +    }}
2273 +
2274 +    public void testRunAfterEither_exceptionalCompletion2() {
2275 +        for (ExecutionMode m : ExecutionMode.values())
2276 +        for (Integer v1 : new Integer[] { 1, null })
2277 +    {
2278 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2279 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2280 +        final Noop r = new Noop(m);
2281 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2282 +        final CFException ex = new CFException();
2283 +
2284 +        g.completeExceptionally(ex);
2285 +        checkCompletedWithWrappedCFException(h, ex);
2286 +        f.complete(v1);
2287 +
2288 +        assertEquals(0, r.invocationCount);
2289 +        checkCompletedNormally(f, v1);
2290 +        checkCompletedWithWrappedCFException(g, ex);
2291 +        checkCompletedWithWrappedCFException(h, ex);
2292 +    }}
2293 +
2294 +    public void testRunAfterEither_exceptionalCompletion3() {
2295 +        for (ExecutionMode m : ExecutionMode.values())
2296 +        for (Integer v1 : new Integer[] { 1, null })
2297 +    {
2298 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2299 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2300 +        final Noop r = new Noop(m);
2301 +        final CFException ex = new CFException();
2302 +
2303 +        g.completeExceptionally(ex);
2304 +        f.complete(v1);
2305 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2306 +
2307 +        // unspecified behavior
2308 +        Integer v;
2309 +        try {
2310 +            assertNull(h.join());
2311 +            assertEquals(1, r.invocationCount);
2312 +        } catch (CompletionException ok) {
2313 +            checkCompletedWithWrappedCFException(h, ex);
2314 +            assertEquals(0, r.invocationCount);
2315 +        }
2316 +
2317 +        checkCompletedWithWrappedCFException(g, ex);
2318 +        checkCompletedNormally(f, v1);
2319 +    }}
2320 +
2321 +    public void testRunAfterEither_exceptionalCompletion4() {
2322 +        for (ExecutionMode m : ExecutionMode.values())
2323 +        for (Integer v1 : new Integer[] { 1, null })
2324 +    {
2325 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2326 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2327 +        final Noop r = new Noop(m);
2328 +        final CFException ex = new CFException();
2329 +
2330 +        f.completeExceptionally(ex);
2331 +        g.complete(v1);
2332 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2333 +
2334 +        // unspecified behavior
2335 +        Integer v;
2336 +        try {
2337 +            assertNull(h.join());
2338 +            assertEquals(1, r.invocationCount);
2339 +        } catch (CompletionException ok) {
2340 +            checkCompletedWithWrappedCFException(h, ex);
2341 +            assertEquals(0, r.invocationCount);
2342 +        }
2343 +
2344 +        checkCompletedWithWrappedCFException(f, ex);
2345 +        checkCompletedNormally(g, v1);
2346 +    }}
2347 +
2348 +    /**
2349 +     * runAfterEither result completes exceptionally if action does
2350 +     */
2351 +    public void testRunAfterEither_actionFailed1() {
2352 +        for (ExecutionMode m : ExecutionMode.values())
2353 +        for (Integer v1 : new Integer[] { 1, null })
2354 +        for (Integer v2 : new Integer[] { 2, null })
2355 +    {
2356 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2357 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2358 +        final FailingRunnable r = new FailingRunnable(m);
2359 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2360 +
2361 +        f.complete(v1);
2362 +        checkCompletedWithWrappedCFException(h);
2363 +        g.complete(v2);
2364 +        checkCompletedNormally(f, v1);
2365 +        checkCompletedNormally(g, v2);
2366 +    }}
2367 +
2368 +    public void testRunAfterEither_actionFailed2() {
2369 +        for (ExecutionMode m : ExecutionMode.values())
2370 +        for (Integer v1 : new Integer[] { 1, null })
2371 +        for (Integer v2 : new Integer[] { 2, null })
2372 +    {
2373 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2374 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2375 +        final FailingRunnable r = new FailingRunnable(m);
2376 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2377 +
2378 +        g.complete(v2);
2379 +        checkCompletedWithWrappedCFException(h);
2380 +        f.complete(v1);
2381 +        checkCompletedNormally(f, v1);
2382 +        checkCompletedNormally(g, v2);
2383 +    }}
2384 +
2385 +    /**
2386 +     * runAfterEither result completes exceptionally if either source cancelled
2387 +     */
2388 +    public void testRunAfterEither_sourceCancelled1() {
2389 +        for (ExecutionMode m : ExecutionMode.values())
2390 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2391 +        for (Integer v1 : new Integer[] { 1, null })
2392 +    {
2393 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2394 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2395 +        final Noop r = new Noop(m);
2396 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2397 +
2398 +        assertTrue(f.cancel(mayInterruptIfRunning));
2399 +        checkCompletedWithWrappedCancellationException(h);
2400 +        g.complete(v1);
2401 +
2402 +        checkCancelled(f);
2403 +        assertEquals(0, r.invocationCount);
2404 +        checkCompletedNormally(g, v1);
2405 +        checkCompletedWithWrappedCancellationException(h);
2406 +    }}
2407 +
2408 +    public void testRunAfterEither_sourceCancelled2() {
2409 +        for (ExecutionMode m : ExecutionMode.values())
2410 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2411 +        for (Integer v1 : new Integer[] { 1, null })
2412 +    {
2413 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2414 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2415 +        final Noop r = new Noop(m);
2416 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2417 +
2418 +        assertTrue(g.cancel(mayInterruptIfRunning));
2419 +        checkCompletedWithWrappedCancellationException(h);
2420 +        f.complete(v1);
2421 +
2422 +        checkCancelled(g);
2423 +        assertEquals(0, r.invocationCount);
2424 +        checkCompletedNormally(f, v1);
2425 +        checkCompletedWithWrappedCancellationException(h);
2426 +    }}
2427 +
2428 +    public void testRunAfterEither_sourceCancelled3() {
2429 +        for (ExecutionMode m : ExecutionMode.values())
2430 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2431 +        for (Integer v1 : new Integer[] { 1, null })
2432 +    {
2433 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2434 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2435 +        final Noop r = new Noop(m);
2436 +
2437 +        assertTrue(g.cancel(mayInterruptIfRunning));
2438 +        f.complete(v1);
2439 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2440 +
2441 +        // unspecified behavior
2442 +        Integer v;
2443 +        try {
2444 +            assertNull(h.join());
2445 +            assertEquals(1, r.invocationCount);
2446 +        } catch (CompletionException ok) {
2447 +            checkCompletedWithWrappedCancellationException(h);
2448 +            assertEquals(0, r.invocationCount);
2449 +        }
2450 +
2451 +        checkCancelled(g);
2452 +        checkCompletedNormally(f, v1);
2453 +    }}
2454 +
2455 +    public void testRunAfterEither_sourceCancelled4() {
2456 +        for (ExecutionMode m : ExecutionMode.values())
2457 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2458 +        for (Integer v1 : new Integer[] { 1, null })
2459 +    {
2460 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2461 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2462 +        final Noop r = new Noop(m);
2463 +
2464 +        assertTrue(f.cancel(mayInterruptIfRunning));
2465 +        g.complete(v1);
2466 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2467 +
2468 +        // unspecified behavior
2469 +        Integer v;
2470 +        try {
2471 +            assertNull(h.join());
2472 +            assertEquals(1, r.invocationCount);
2473 +        } catch (CompletionException ok) {
2474 +            checkCompletedWithWrappedCancellationException(h);
2475 +            assertEquals(0, r.invocationCount);
2476 +        }
2477 +
2478 +        checkCancelled(f);
2479 +        checkCompletedNormally(g, v1);
2480 +    }}
2481 +
2482 +    /**
2483 +     * thenCompose result completes normally after normal completion of source
2484 +     */
2485 +    public void testThenCompose_normalCompletion() {
2486 +        for (ExecutionMode m : ExecutionMode.values())
2487 +        for (boolean createIncomplete : new boolean[] { true, false })
2488 +        for (Integer v1 : new Integer[] { 1, null })
2489 +    {
2490 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2491 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2492 +        if (!createIncomplete) f.complete(v1);
2493 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2494 +        if (createIncomplete) f.complete(v1);
2495 +
2496 +        checkCompletedNormally(g, inc(v1));
2497 +        checkCompletedNormally(f, v1);
2498 +        assertEquals(1, r.invocationCount);
2499 +    }}
2500 +
2501 +    /**
2502 +     * thenCompose result completes exceptionally after exceptional
2503 +     * completion of source
2504 +     */
2505 +    public void testThenCompose_exceptionalCompletion() {
2506 +        for (ExecutionMode m : ExecutionMode.values())
2507 +        for (boolean createIncomplete : new boolean[] { true, false })
2508 +    {
2509 +        final CFException ex = new CFException();
2510 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2511 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2512 +        if (!createIncomplete) f.completeExceptionally(ex);
2513 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2514 +        if (createIncomplete) f.completeExceptionally(ex);
2515 +
2516 +        checkCompletedWithWrappedCFException(g, ex);
2517 +        checkCompletedWithWrappedCFException(f, ex);
2518 +        assertEquals(0, r.invocationCount);
2519 +    }}
2520 +
2521 +    /**
2522 +     * thenCompose result completes exceptionally if action does
2523 +     */
2524 +    public void testThenCompose_actionFailed() {
2525 +        for (ExecutionMode m : ExecutionMode.values())
2526 +        for (boolean createIncomplete : new boolean[] { true, false })
2527 +        for (Integer v1 : new Integer[] { 1, null })
2528 +    {
2529 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2530 +        final FailingCompletableFutureFunction r
2531 +            = new FailingCompletableFutureFunction(m);
2532 +        if (!createIncomplete) f.complete(v1);
2533 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2534 +        if (createIncomplete) f.complete(v1);
2535 +
2536 +        checkCompletedWithWrappedCFException(g);
2537 +        checkCompletedNormally(f, v1);
2538 +    }}
2539 +
2540 +    /**
2541 +     * thenCompose result completes exceptionally if source cancelled
2542 +     */
2543 +    public void testThenCompose_sourceCancelled() {
2544 +        for (ExecutionMode m : ExecutionMode.values())
2545 +        for (boolean createIncomplete : new boolean[] { true, false })
2546 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2547 +    {
2548 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2549 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2550 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2551 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2552 +        if (createIncomplete) {
2553 +            checkIncomplete(g);
2554 +            assertTrue(f.cancel(mayInterruptIfRunning));
2555 +        }
2556 +
2557 +        checkCompletedWithWrappedCancellationException(g);
2558 +        checkCancelled(f);
2559 +    }}
2560 +
2561 +    // other static methods
2562 +
2563 +    /**
2564       * allOf(no component futures) returns a future completed normally
2565       * with the value null
2566       */
2567      public void testAllOf_empty() throws Exception {
2568 <        CompletableFuture<?> f = CompletableFuture.allOf();
2568 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2569          checkCompletedNormally(f, null);
2570      }
2571  
2572      /**
2573 +     * allOf returns a future completed normally with the value null
2574 +     * when all components complete normally
2575 +     */
2576 +    public void testAllOf_normal() throws Exception {
2577 +        for (int k = 1; k < 20; ++k) {
2578 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2579 +            for (int i = 0; i < k; ++i)
2580 +                fs[i] = new CompletableFuture<>();
2581 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2582 +            for (int i = 0; i < k; ++i) {
2583 +                checkIncomplete(f);
2584 +                checkIncomplete(CompletableFuture.allOf(fs));
2585 +                fs[i].complete(one);
2586 +            }
2587 +            checkCompletedNormally(f, null);
2588 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2589 +        }
2590 +    }
2591 +
2592 +    /**
2593       * anyOf(no component futures) returns an incomplete future
2594       */
2595      public void testAnyOf_empty() throws Exception {
2596 <        CompletableFuture<?> f = CompletableFuture.anyOf();
2596 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
2597          checkIncomplete(f);
2598      }
2599 +
2600 +    /**
2601 +     * anyOf returns a future completed normally with a value when
2602 +     * a component future does
2603 +     */
2604 +    public void testAnyOf_normal() throws Exception {
2605 +        for (int k = 0; k < 10; ++k) {
2606 +            CompletableFuture[] fs = new CompletableFuture[k];
2607 +            for (int i = 0; i < k; ++i)
2608 +                fs[i] = new CompletableFuture<>();
2609 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2610 +            checkIncomplete(f);
2611 +            for (int i = 0; i < k; ++i) {
2612 +                fs[i].complete(one);
2613 +                checkCompletedNormally(f, one);
2614 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2615 +            }
2616 +        }
2617 +    }
2618 +
2619 +    /**
2620 +     * anyOf result completes exceptionally when any component does.
2621 +     */
2622 +    public void testAnyOf_exceptional() throws Exception {
2623 +        for (int k = 0; k < 10; ++k) {
2624 +            CompletableFuture[] fs = new CompletableFuture[k];
2625 +            for (int i = 0; i < k; ++i)
2626 +                fs[i] = new CompletableFuture<>();
2627 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2628 +            checkIncomplete(f);
2629 +            for (int i = 0; i < k; ++i) {
2630 +                fs[i].completeExceptionally(new CFException());
2631 +                checkCompletedWithWrappedCFException(f);
2632 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2633 +            }
2634 +        }
2635 +    }
2636 +
2637 +    /**
2638 +     * Completion methods throw NullPointerException with null arguments
2639 +     */
2640 +    public void testNPE() {
2641 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2642 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2643 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2644 +        CompletableFuture<?> h;
2645 +        ThreadExecutor exec = new ThreadExecutor();
2646 +
2647 +        Runnable[] throwingActions = {
2648 +            () -> CompletableFuture.supplyAsync(null),
2649 +            () -> CompletableFuture.supplyAsync(null, exec),
2650 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
2651 +
2652 +            () -> CompletableFuture.runAsync(null),
2653 +            () -> CompletableFuture.runAsync(null, exec),
2654 +            () -> CompletableFuture.runAsync(() -> {}, null),
2655 +
2656 +            () -> f.completeExceptionally(null),
2657 +
2658 +            () -> f.thenApply(null),
2659 +            () -> f.thenApplyAsync(null),
2660 +            () -> f.thenApplyAsync((x) -> x, null),
2661 +            () -> f.thenApplyAsync(null, exec),
2662 +
2663 +            () -> f.thenAccept(null),
2664 +            () -> f.thenAcceptAsync(null),
2665 +            () -> f.thenAcceptAsync((x) -> {} , null),
2666 +            () -> f.thenAcceptAsync(null, exec),
2667 +
2668 +            () -> f.thenRun(null),
2669 +            () -> f.thenRunAsync(null),
2670 +            () -> f.thenRunAsync(() -> {} , null),
2671 +            () -> f.thenRunAsync(null, exec),
2672 +
2673 +            () -> f.thenCombine(g, null),
2674 +            () -> f.thenCombineAsync(g, null),
2675 +            () -> f.thenCombineAsync(g, null, exec),
2676 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2677 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2678 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2679 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2680 +
2681 +            () -> f.thenAcceptBoth(g, null),
2682 +            () -> f.thenAcceptBothAsync(g, null),
2683 +            () -> f.thenAcceptBothAsync(g, null, exec),
2684 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2685 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2686 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2687 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2688 +
2689 +            () -> f.runAfterBoth(g, null),
2690 +            () -> f.runAfterBothAsync(g, null),
2691 +            () -> f.runAfterBothAsync(g, null, exec),
2692 +            () -> f.runAfterBoth(nullFuture, () -> {}),
2693 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2694 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2695 +            () -> f.runAfterBothAsync(g, () -> {}, null),
2696 +
2697 +            () -> f.applyToEither(g, null),
2698 +            () -> f.applyToEitherAsync(g, null),
2699 +            () -> f.applyToEitherAsync(g, null, exec),
2700 +            () -> f.applyToEither(nullFuture, (x) -> x),
2701 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2702 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2703 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
2704 +
2705 +            () -> f.acceptEither(g, null),
2706 +            () -> f.acceptEitherAsync(g, null),
2707 +            () -> f.acceptEitherAsync(g, null, exec),
2708 +            () -> f.acceptEither(nullFuture, (x) -> {}),
2709 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2710 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2711 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2712 +
2713 +            () -> f.runAfterEither(g, null),
2714 +            () -> f.runAfterEitherAsync(g, null),
2715 +            () -> f.runAfterEitherAsync(g, null, exec),
2716 +            () -> f.runAfterEither(nullFuture, () -> {}),
2717 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2718 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2719 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
2720 +
2721 +            () -> f.thenCompose(null),
2722 +            () -> f.thenComposeAsync(null),
2723 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2724 +            () -> f.thenComposeAsync(null, exec),
2725 +
2726 +            () -> f.exceptionally(null),
2727 +
2728 +            () -> f.handle(null),
2729 +
2730 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2731 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2732 +            () -> CompletableFuture.allOf(f, null),
2733 +            () -> CompletableFuture.allOf(null, f),
2734 +
2735 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2736 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2737 +            () -> CompletableFuture.anyOf(f, null),
2738 +            () -> CompletableFuture.anyOf(null, f),
2739 +
2740 +            () -> f.obtrudeException(null),
2741 +        };
2742 +
2743 +        assertThrows(NullPointerException.class, throwingActions);
2744 +        assertEquals(0, exec.count.get());
2745 +    }
2746 +
2747 +    /**
2748 +     * toCompletableFuture returns this CompletableFuture.
2749 +     */
2750 +    public void testToCompletableFuture() {
2751 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2752 +        assertSame(f, f.toCompletableFuture());
2753 +    }
2754 +
2755 +    /**
2756 +     * whenComplete action executes on normal completion, propagating
2757 +     * source result.
2758 +     */
2759 +    public void testWhenComplete_normalCompletion1() {
2760 +        for (ExecutionMode m : ExecutionMode.values())
2761 +        for (boolean createIncomplete : new boolean[] { true, false })
2762 +        for (Integer v1 : new Integer[] { 1, null })
2763 +    {
2764 +        final AtomicInteger a = new AtomicInteger(0);
2765 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2766 +        if (!createIncomplete) f.complete(v1);
2767 +        final CompletableFuture<Integer> g = m.whenComplete
2768 +            (f,
2769 +             (Integer x, Throwable t) -> {
2770 +                threadAssertSame(x, v1);
2771 +                threadAssertNull(t);
2772 +                a.getAndIncrement();
2773 +            });
2774 +        if (createIncomplete) f.complete(v1);
2775 +
2776 +        checkCompletedNormally(g, v1);
2777 +        checkCompletedNormally(f, v1);
2778 +        assertEquals(1, a.get());
2779 +    }}
2780 +
2781 +    /**
2782 +     * whenComplete action executes on exceptional completion, propagating
2783 +     * source result.
2784 +     */
2785 +    public void testWhenComplete_exceptionalCompletion() {
2786 +        for (ExecutionMode m : ExecutionMode.values())
2787 +        for (boolean createIncomplete : new boolean[] { true, false })
2788 +        for (Integer v1 : new Integer[] { 1, null })
2789 +    {
2790 +        final AtomicInteger a = new AtomicInteger(0);
2791 +        final CFException ex = new CFException();
2792 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2793 +        if (!createIncomplete) f.completeExceptionally(ex);
2794 +        final CompletableFuture<Integer> g = m.whenComplete
2795 +            (f,
2796 +             (Integer x, Throwable t) -> {
2797 +                threadAssertNull(x);
2798 +                threadAssertSame(t, ex);
2799 +                a.getAndIncrement();
2800 +            });
2801 +        if (createIncomplete) f.completeExceptionally(ex);
2802 +        checkCompletedWithWrappedCFException(f, ex);
2803 +        checkCompletedWithWrappedCFException(g, ex);
2804 +        assertEquals(1, a.get());
2805 +    }}
2806 +
2807 +    /**
2808 +     * whenComplete action executes on cancelled source, propagating
2809 +     * CancellationException.
2810 +     */
2811 +    public void testWhenComplete_sourceCancelled() {
2812 +        for (ExecutionMode m : ExecutionMode.values())
2813 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2814 +        for (boolean createIncomplete : new boolean[] { true, false })
2815 +    {
2816 +        final AtomicInteger a = new AtomicInteger(0);
2817 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2818 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2819 +        final CompletableFuture<Integer> g = m.whenComplete
2820 +            (f,
2821 +             (Integer x, Throwable t) -> {
2822 +                threadAssertNull(x);
2823 +                threadAssertTrue(t instanceof CancellationException);
2824 +                a.getAndIncrement();
2825 +            });
2826 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2827 +
2828 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2829 +        checkCompletedWithWrappedCancellationException(g);
2830 +        checkCancelled(f);
2831 +        assertEquals(1, a.get());
2832 +    }}
2833 +
2834 +    /**
2835 +     * If a whenComplete action throws an exception when triggered by
2836 +     * a normal completion, it completes exceptionally
2837 +     */
2838 +    public void testWhenComplete_actionFailed() {
2839 +        for (boolean createIncomplete : new boolean[] { true, false })
2840 +        for (ExecutionMode m : ExecutionMode.values())
2841 +        for (Integer v1 : new Integer[] { 1, null })
2842 +    {
2843 +        final AtomicInteger a = new AtomicInteger(0);
2844 +        final CFException ex = new CFException();
2845 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2846 +        if (!createIncomplete) f.complete(v1);
2847 +        final CompletableFuture<Integer> g = m.whenComplete
2848 +            (f,
2849 +             (Integer x, Throwable t) -> {
2850 +                threadAssertSame(x, v1);
2851 +                threadAssertNull(t);
2852 +                a.getAndIncrement();
2853 +                throw ex;
2854 +            });
2855 +        if (createIncomplete) f.complete(v1);
2856 +        checkCompletedNormally(f, v1);
2857 +        checkCompletedWithWrappedCFException(g, ex);
2858 +        assertEquals(1, a.get());
2859 +    }}
2860 +
2861 +    /**
2862 +     * If a whenComplete action throws an exception when triggered by
2863 +     * a source completion that also throws an exception, the source
2864 +     * exception takes precedence.
2865 +     */
2866 +    public void testWhenComplete_actionFailedSourceFailed() {
2867 +        for (boolean createIncomplete : new boolean[] { true, false })
2868 +        for (ExecutionMode m : ExecutionMode.values())
2869 +        for (Integer v1 : new Integer[] { 1, null })
2870 +    {
2871 +        final AtomicInteger a = new AtomicInteger(0);
2872 +        final CFException ex1 = new CFException();
2873 +        final CFException ex2 = new CFException();
2874 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2875 +
2876 +        if (!createIncomplete) f.completeExceptionally(ex1);
2877 +        final CompletableFuture<Integer> g = m.whenComplete
2878 +            (f,
2879 +             (Integer x, Throwable t) -> {
2880 +                threadAssertSame(t, ex1);
2881 +                threadAssertNull(x);
2882 +                a.getAndIncrement();
2883 +                throw ex2;
2884 +            });
2885 +        if (createIncomplete) f.completeExceptionally(ex1);
2886 +
2887 +        checkCompletedWithWrappedCFException(f, ex1);
2888 +        checkCompletedWithWrappedCFException(g, ex1);
2889 +        assertEquals(1, a.get());
2890 +    }}
2891 +
2892   }

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